
The all-new M178 engine, is set to power the upcoming Mercedes-AMG GT (C190).
510 hp (503 bhp) at 6,250 rpm and 650 Nm (479 lb ft) of torque between 1,750 rpm and 4,750 rpm.
As expected, the 3982 cc cylinder displacement is exactly twice of the M133 engine in the “45 AMG” models, with the M178 essentially being two four-pots bonded together to form a V8.
unlike the M133 from the A 45 AMG and Co., the new M178 looks to be very lightly stressed, with the turbochargers only bringing up to 1.2 bar (about 17.4 psi) of boost, as opposed to the 1.8 bar (26 psi) of boost in the M133 four-cylinder.
Just like a racing engine, the new M178 uses a dry-sump lubrication system, which provides its part for the powerplant to achieve a dry weight of just 209 kg (461 pounds) , which is lower than both that of the BMW S63 and the Audi 4.0 TFSI engines.